Added HostKeyPair class, signatures for heartbeat messages.

remoting/jingle_glue/iq_request.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_JINGLE_GLUE_IQ_REQUEST_H_
 #define REMOTING_JINGLE_GLUE_IQ_REQUEST_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "third_party/libjingle/source/talk/xmpp/xmppengine.h"
 
 namespace remoting {
 
 class JingleClient;
 
 // IqRequest class can be used to send an IQ stanza and then receive reply
 // stanza for that request. It sends outgoing stanza when SendIq() is called,
 // after that it forwards incoming reply stanza to the callback set with
 // set_callback(). If multiple IQ stanzas are send with SendIq() then only reply
 // to the last one will be received.
 // The class must be used on the jingle thread only.
-// TODO(sergeyu): Implement unittests for this class.
 class IqRequest : private buzz::XmppIqHandler {
  public:
   typedef Callback1<const buzz::XmlElement*>::Type ReplyCallback;
 
   explicit IqRequest(JingleClient* jingle_client);
   virtual ~IqRequest();
 
   // Sends stanza of type |type| to |addressee|. |iq_body| contains body of
   // the stanza. Ownership of |iq_body| is transfered to IqRequest. Must
   // be called on the jingle thread.
-  void SendIq(const std::string& type, const std::string& addressee,
-              buzz::XmlElement* iq_body);
+  virtual void SendIq(const std::string& type, const std::string& addressee,
+                      buzz::XmlElement* iq_body);
 
   // Sets callback that is called when reply stanza is received. Callback
   // is called on the jingle thread.
   void set_callback(ReplyCallback* callback) {
     callback_.reset(callback);
   }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(IqRequestTest, MakeIqStanza);
 
   // XmppIqHandler interface.
   virtual void IqResponse(buzz::XmppIqCookie cookie,
                           const buzz::XmlElement* stanza);
 
   static buzz::XmlElement* MakeIqStanza(const std::string& type,
                                         const std::string& addressee,
                                         buzz::XmlElement* iq_body,
                                         const std::string& id);
 
   void Unregister();
 
   scoped_refptr<JingleClient> jingle_client_;
   buzz::XmppIqCookie cookie_;
   scoped_ptr<ReplyCallback> callback_;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_JINGLE_GLUE_IQ_REQUEST_H_